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PRODUCT MODULE 01 / 06

Physical Dimensions

Automatic mm / inch conversion · Core engineering specifications

Data source: Structured from factory data; final measured values prevail.

Overall dimensions (W × D × H)	590 × 640 × 1060 mm
Seat width	510 mm
Seat depth	440 mm
Adjustable seat height	510 mm
Backrest height	570 mm
Backrest inner width	460 mm
Armrest height above seat	180 mm
Five-star base diameter	700 mm
Seat thickness	80 mm
Caster diameter	60 mm
Finished Seat Cushion Thickness	90 mm
Backrest Padding Thickness	70 mm
Lumbar Support Zone Height	240 mm
Clear Width Between Armrests	540 mm

PRODUCT MODULE 02 / 06

Weight, Load & Performance

Net weight / load capacity / users / durability

Data source: Product performance data; verify exact test conditions before procurement.

Net chair weight	15 kg
Recommended user weight capacity	120 kg
Gas lift cycle durability	120000 cycles
Caster rolling durability	100000 cycles
Five-star base static load capacity	1136 kg
Seat foam density	45 kg/m³
Seat foam rebound rate	40%
Standard product warranty	3 years
Available color options	1
Seat Foam Density / Rebound Reference	45 kg/m³ / 65%

PRODUCT MODULE 03 / 06

Materials & Structure

Core acceptance fields · Panels / hardware / frame / upholstery

Data source: Subject to the factory material list and inspection report.

Backrest panel	Tensioned breathable polyester mesh over nylon frame
Back support structure	Integrated molded nylon lumbar support frame
Seat cushion core	45kg/m³ high-density molded PU foam
Seat upholstery	Wear-resistant polyester fabric over foam pad
Armrests	Fixed curved PP armrests with padded top surface
Seat support board	12mm thick plywood inner support panel
Five-star base	Reinforced black nylon five-prong base
Gas lift	Steel Class 3 pneumatic cylinder with black finish
Casters	60mm diameter black PU dual-wheel swivel casters
Mechanism chassis	2.5mm thick steel tilt mechanism with powder coat
Seam stitch pitch	8 mm
Seat Internal Support Board Thickness	14 mm bent plywood or equivalent support board

PRODUCT MODULE 04 / 06

Functions & Adjustment

Adjustment / rotation / tilt / mobility / storage features

Data source: Functional configuration; the supplier specification prevails.

Height adjustment	Pneumatic seat height adjustment with 100mm stroke via under-seat lever
Swivel function	360-degree full rotation at seat-base swivel junction
Tilt function	Synchro-tilt rocking with adjustable tension and single-position lock
Tilt lock angle	12 degree maximum recline angle for backrest tilt
Mobility function	Smooth rolling on hard floors and low-pile carpet via PU casters
Lumbar support	Fixed contoured integrated lumbar support aligned to lower back
Armrest function	Fixed-height curved armrests for forearm support during seated work
Upholstery breathability	Mesh back allows continuous airflow to reduce back heat buildup
Recline Angle / Lock Reference	125° with 3suggested lock positions
Tilt Tension User-weight Range	Reference adjustment coverage 120 kg
Rotation / Mobility Configuration	360° swivel with 5-caster multidirectional movement

PRODUCT MODULE 05 / 06

Packaging & Logistics

Verified carton / gross weight / assembly / loading data

Data source: Reference for export quotations and container planning.

Reference Package Count	1 set / 2 cartons
Reference Assembly Time	40 minutes per set
Reference Carton Dimensions	850× 420× 720 mm
Reference Packaged Gross Weight	23 kg/set
Reference Carton Volume	0.26 m³/set
Indicative 20GP Loading	135 sets at 85% space utilization
Indicative 40HQ Loading	320 sets at 85% space utilization

PRODUCT MODULE 06 / 06

Applications & Usage

Recommended spaces / users / usage modes

Data source: Recommended applications based on product form and category.

Open office workstations	Compact footprint fits standard 1200mm desk stations for daily staff use
Home office setups	Breathable mesh back suitable for extended seated work in residential spaces
Conference room seating	Fixed armrests and professional finish suit meeting room guest seating
Training room layouts	Swivel and mobility features support easy movement during training sessions
Cubicle employee seating	Standard ergonomic dimensions fit 90th percentile adult users for full shifts
Reception visitor areas	Neutral black color matches most commercial office interior design schemes
Recommended Matching Desk Size	2.4 m executive desk
Reference Daily Use Duration	8 hours/day; confirm by ergonomic testing

STANDARD S1

EU Market Entry Requirements * EN Standards

EU Market Access Requirements* EN Standards

EN 1335-1:2020	Applies to office chair dimensional safety and ergonomic requirements
EN 1335-2:2018	Applies to office chair strength, durability and stability performance
EN 1335-3:2009	Applies to office chair structural and mechanical test methods

STANDARD S2

North America Purchasing & Inspection Reference * ANSI/BIFMA Standards

US and Canada office-furniture standards

ANSI/BIFMA X5.1-2017	Applies to general-purpose office chair durability and safety requirements

STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

GB/T 3326-2016	Applies to office chair dimensional accuracy and stability testing
GB/T 10357.3-2013	Applies to office chair seat and back strength and durability testing
GB 18584-2001	Applies to formaldehyde emission limits for furniture components

Standardized tender description text

This product must meet the following technical requirements:
1. GB/T 3326-2016: Applies to office chair dimensional accuracy and stability testing;
2. GB/T 10357.3-2013: Applies to office chair seat and back strength and durability testing;
3. GB 18584-2001: Applies to formaldehyde emission limits for furniture components;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.

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Product Description

The Mid-Back Mesh Ergonomic Office Task Chair (model MB-FA-MESH-059) is an unbranded professional seating solution designed for versatile commercial and residential workspaces. Visually, it features a clean, streamlined silhouette with a neutral black finish that aligns with most commercial interior design schemes, paired with a structured mid-height backrest, fixed curved armrests, and a wide five-prong base for a balanced, professional appearance. Its overall dimensions of 590 x 640 x 1060 mm create a compact footprint that integrates seamlessly into standard desk layouts without excessive visual bulk. Constructed for long-term regular use, the chair pairs a tensioned breathable polyester mesh backrest set over a durable nylon frame, with an integrated molded nylon lumbar support structure positioned to align with the natural curve of the lower back. The seat features a 45kg/m³ high-density molded PU foam core with 40% rebound rate, upholstered in wear-resistant polyester fabric, supported by a 12mm thick plywood inner panel. Fixed curved PP armrests with padded top surfaces sit 180 mm above the seat, while the base uses a reinforced black nylon five-prong design with 700 mm diameter, fitted with 60mm black PU dual-wheel swivel casters and a black-finished Class 3 steel pneumatic gas lift. All structural components are engineered for durability, with tested load capacities and cycle ratings suited to daily multi-user use, supporting a maximum recommended user weight of 120 kg. Functional features support comfortable, flexible seated work: a side under-seat lever controls pneumatic seat height adjustment with 100mm travel, the seat and back junction enables 360-degree full swivel rotation, and a synchro-tilt mechanism offers adjustable rocking tension with a single-position lock at a 12 degree maximum backrest recline. The PU casters roll smoothly across hard floors and low-pile carpet, while the fixed contoured lumbar support and padded armrests reduce strain during extended sitting. The breathable mesh back prevents heat buildup for all-day comfort, and the seat dimensions (510 mm width, 440 mm depth) accommodate 90th percentile adult users for full-shift use. This chair is suited to a wide range of spaces: it fits standard 1200mm open office workstations and cubicle employee seating, works reliably for home office extended work sessions, presents a polished look for conference room guest seating, supports easy repositioning during training room activities, and blends seamlessly into reception visitor areas. For procurement, note that each unit ships in 2 cartons with a total packaged gross weight of 23 kg and 0.26 m³ volume, requires 40 minutes of assembly per set, and allows 135 sets to be loaded in a 20GP container at 85% space utilization, making it a practical choice for both small-scale and bulk furnishing projects.

Mid-Back Mesh Ergonomic Office Task Chair Specifications

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